Retail shelf



FIG. 1 is a perspective view of the retail shelf;

FIG. 2 is a front elevational view of the retail shelf;

FIG. 3 is a rear elevational view of the retail shelf;

FIG. 4 is a left side elevational view of the retail shelf, the oppositeside of which is an identical mirror image;

FIG. 5 is a top plan view of the retail shelf; and,

FIG. 6 is a bottom plan view of the retail shelf.

CLAIM The ornamental design for a retail shelf, as shown and described.